By Revision Genie
Cells and Movement Across Membranes
Unit 1
Animal Cell Structure
Plant Cell Structure
Functions of Cell Components
Drawing and Labelling Cells
Using a Light Microscope
Specialised Cells and Adaptations
Levels of Organisation in Organisms
Tissues, Organs, and Organ Systems
Diffusion Definition and Process
Role of Cell Membrane in Diffusion
Visking Tubing as a Diffusion Model
Diffusion of Oxygen and Carbon Dioxide
Osmosis Definition and Process
Selective Permeability in Osmosis
Active Transport Definition and Process
Active Transport Against Concentration Gradient
Enzymes as Biological Catalysts
Structure of Enzymes and Amino Acids
Lock and Key Model of Enzyme Action
Effect of Temperature on Enzyme Activity
Effect of pH on Enzyme Activity
Enzyme Denaturation by Boiling
Microscope Observation of Animal Cells
Microscope Observation of Plant Cells
Investigating Factors Affecting Enzyme Action
Unit 2
Respiration and the Respiratory System
Aerobic Respiration Overview
Aerobic Respiration Word Equation
Anaerobic Respiration Overview
Anaerobic Respiration Word Equation
Oxygen Debt in Anaerobic Respiration
Comparison of Aerobic and Anaerobic Respiration
Structure of the Respiratory System
Function of the Nasal Cavity
Role of the Trachea and Bronchi
Bronchioles and Alveoli Function
Diaphragm and Rib Cage Movement
Mechanisms of Inspiration and Expiration
Bell Jar Model for Breathing
Limitations of the Bell Jar Model
Structure of Alveoli and Blood Supply
Gas Exchange in Alveoli
Adaptations of Alveoli for Gas Exchange
Composition of Inspired and Expired Air
Limewater Test for Carbon Dioxide
Role of Mucus in the Respiratory System
Function of Cilia in the Respiratory System
Effects of Smoking on the Respiratory System
Smoking and Lung Cancer Link
Smoking and Emphysema Effects
Consequences of Respiratory Diseases from Smoking
Unit 3
Digestion and the Digestive System
The Need for Digestion
Large Molecules vs. Small Molecules
Products of Digestion: Fats
Products of Digestion: Proteins
Products of Digestion: Carbohydrates
Testing for Starch with Iodine
Testing for Glucose with Benedict’s Reagent
Testing for Protein with Biuret Solution
Role of Carbohydrase in Digestion
Role of Protease in Digestion
Role of Lipase in Digestion
Structure of the Digestive System
Labeling the Digestive System Diagram
Functions of Digestive Organs
Peristalsis: Moving Food Through the Gut
Role of Bile in Fat Breakdown
Absorption in the Small Intestine
Using Visking Tubing as a Model Gut
Limitations of the Visking Tubing Model
Fate of Digested Fats
Fate of Digested Carbohydrates
Fate of Digested Proteins
Components of a Balanced Diet
Role of Protein in the Diet
Role of Carbohydrates in the Diet
Role of Fats in the Diet
Minerals: Importance of Iron
Vitamins: Importance of Vitamin C
Role of Fibre in Digestion
Water: Essential for the Body
Energy Content of Different Foods
Excess Sugar and Its Health Implications
Excess Fat and Its Health Implications
Excess Salt and Its Health Implications
Practical: Investigating Energy Content in Foods
Unit 4
Circulatory System in Humans
Introduction to the Circulatory System
Functions of the Circulatory System
Structure of the Heart
Labeling the Heart Diagram
Passage of Blood Through the Heart
The Role of Valves in the Heart
Coronary Vessels and Heart Muscle
Double Circulatory System: Pulmonary and Systemic
Structure and Function of Arteries
Structure and Function of Veins
Structure and Function of Capillaries
Adaptations of Capillaries for Diffusion
Blood Components Overview
Structure and Function of Red Blood Cells
Structure and Function of White Blood Cells
Platelets and Blood Clotting
Role of Plasma in Transport
Risk Factors for Cardiovascular Disease
Effects of Cardiovascular Disease
Heart Dissection Practical
Effect of Exercise on Heart Rate
Examining Blood Flow in Organs
Substances Exchanged Through Capillary Walls
Diagram of Blood Flow in the Body
Common Exam Mistakes in Circulatory System Questions
Unit 5
Plants and Photosynthesis
Definition of Photosynthesis
Word Equation for Photosynthesis
Importance of Photosynthesis
Role of Chlorophyll in Photosynthesis
Conditions Required for Photosynthesis
Carbon Dioxide in Photosynthesis
Water in Photosynthesis
Light Energy in Photosynthesis
Oxygen as a By-Product
Glucose Production in Photosynthesis
Limiting Factors of Photosynthesis
Effect of Temperature on Photosynthesis
Effect of Light Intensity on Photosynthesis
Effect of Carbon Dioxide Concentration
Investigating Photosynthesis Using Sodium Hydroxide
Testing a Leaf for Starch
Using Sensors to Measure Oxygen Production
Using Sensors to Measure Carbon Dioxide Uptake
Inverse Square Law and Light Intensity
Plant Adaptations for Photosynthesis
Structure of a Leaf
Role of the Cuticle and Epidermis
Role of Palisade Cells in Photosynthesis
Role of Spongy Mesophyll and Gas Exchange
Stomata and Guard Cells
Adaptations of Chloroplasts
Glucose Uses in Plants
Glucose Conversion to Starch
Glucose Conversion to Cellulose
Glucose Conversion to Proteins
Glucose Conversion to Oils
Photosynthesis in Algae
Role of Photosynthesis in Ecosystems
Energy Transfer in Food Chains
Photosynthesis and Atmospheric Oxygen Levels
Practical: Investigating Photosynthesis Rates
Practical: Measuring Starch in Leaves
Practical: Investigating Light Intensity Effects
Practical: Investigating Carbon Dioxide Effects
Practical: Investigating Temperature Effects
Common Errors in Photosynthesis Experiments
Exam Trap: Misinterpreting Limiting Factors
Exam Trap: Confusing Light and Chlorophyll Roles
Exam Trap: Mislabeling Leaf Structures
Unit 6
Ecosystems and Human Impact
Definition of Ecosystems
Levels of Organisation in Ecosystems
Populations, Communities, and Habitats
Producers and Consumers in Food Chains
The Role of Decomposers
Pyramids of Numbers
Pyramids of Biomass
Calculating Energy Efficiency Between Trophic Levels
Factors Affecting Population Sizes
Competition for Resources
Predation and Its Impact on Populations
Disease Effects on Ecosystems
Pollution Impacts on Ecosystems
Indicator Species for Water Pollution
Lichens as Indicators of Air Pollution
Heavy Metals in Food Chains
Eutrophication Process and Effects
Human Activities That Impact Ecosystems
Intensive Farming Methods
Advantages and Disadvantages of Fertilisers
Pesticides and Disease Control in Farming
Battery Farming Methods
Balancing Human Needs with Wildlife Conservation
Sustainability in Food Production
The Concept of Biodiversity
Importance of Biodiversity
Threats to Biodiversity
Protecting Endangered Species
Legislation for Biodiversity Protection
Alien Species and Their Impact
Biological Control Agents
Changes in pH and Oxygen Levels in Streams
Sewage and Fertiliser Pollution Effects
Unit 7
The Nature of Substances and Chemical Reactions
Definition of an Element
Atoms in Elements
Definition of a Compound
Properties of Compounds vs Elements
Chemical Symbols for Elements
Chemical Formulae for Molecules
Drawing Simple Molecule Diagrams
Writing Ionic Compound Formulae
Relative Atomic Mass
Relative Molecular Mass
Percentage Composition of Compounds
Definition of a Mixture
Separation Techniques: Filtration
Separation Techniques: Evaporation
Separation Techniques: Chromatography
Separation Techniques: Distillation
Chromatographic Data Analysis
Calculating Rf Values in Chromatography
Definition of a Chemical Reaction
Evidence of Chemical Reactions
Writing Word Equations for Reactions
Balancing Chemical Equations
Conservation of Mass in Reactions
Calculating Percentage Yield
Reacting Mass Calculations
Introduction to Moles
The Avogadro Constant
Converting Grams to Moles
Converting Moles to Grams
Unit 8
Atomic Structure and the Periodic Table
Structure of the Atom
Protons, Neutrons, and Electrons
Relative Mass and Charge of Subatomic Particles
Atomic Number and Mass Number
Isotopes Definition and Examples
Calculating Numbers of Subatomic Particles
Electron Arrangement in Atoms
Electronic Structure and Periodic Table Position
Development of the Periodic Table
Modern Periodic Table Organization
Groups and Periods in the Periodic Table
Metals and Non-Metals in the Periodic Table
Properties of Transition Metals
Group 1: Alkali Metals Properties
Group 1: Reactions with Air and Water
Group 1: Trends in Reactivity
Group 7: Halogens Properties
Group 7: Reactions with Metals and Iron
Group 7: Trends in Reactivity
Displacement Reactions of Halogens
Group 0: Noble Gases Properties
Group 0: Uses of Noble Gases
Tests for Hydrogen, Chlorine, and Iodine
Flame Tests for Metal Ions
Reactions of Alkali Metals and Halogens
Predicting Properties Using Periodic Trends
Ion Formation in Reactions
Reactivity Trends in Groups 1 and 7
Practical: Flame Tests for Metal Ions
Practical: Identifying Halide Ions with Silver Nitrate
Exam Trap: Misinterpreting Periodic Trends
Unit 9
Water and Its Properties
Structure of Water Molecules
Hydrogen Bonding in Water
Properties of Water: Cohesion
Properties of Water: Adhesion
Properties of Water: High Specific Heat Capacity
Properties of Water: High Latent Heat of Vaporization
Properties of Water: Density and Ice Formation
Water as a Solvent
Composition of Natural Water Supplies
Water Treatment: Sedimentation
Water Treatment: Filtration
Water Treatment: Chlorination
Water Treatment: Desalination
Fluoridation of Water: Benefits
Fluoridation of Water: Ethical Concerns
Hard and Soft Water: Definitions
Temporary Hardness in Water
Permanent Hardness in Water
Testing for Water Hardness Using Soap
Methods to Soften Water: Boiling
Methods to Soften Water: Sodium Carbonate Addition
Methods to Soften Water: Ion Exchange
Advantages of Hard Water
Disadvantages of Hard Water
Solubility: Definition and Factors
Solubility Curves: Plotting Data
Interpreting Solubility Curves
Exam Trap: Misinterpreting Solubility Data
Environmental Impact of Water Treatment
Sustainability in Water Usage
Specified Practical: Determining Water Hardness
Unit 10
The Ever-Changing Earth
Structure of the Earth
The Earth's Core and Mantle
The Earth's Crust
Plate Tectonics Theory
Development of Continental Drift Theory
Conservative Plate Boundaries
Destructive Plate Boundaries
Constructive Plate Boundaries
Formation of the Original Atmosphere
Volcanic Gases and Atmospheric Evolution
Present Composition of the Atmosphere
Changes in Atmospheric Composition Over Time
Role of Respiration in Atmospheric Balance
Role of Photosynthesis in Atmospheric Balance
Role of Combustion in Atmospheric Balance
Carbon Dioxide Emissions and Global Warming
Sulfur Dioxide Emissions and Acid Rain
Environmental Effects of Fossil Fuel Combustion
Measures to Address Global Warming
Measures to Address Acid Rain
Air as a Source of Nitrogen
Air as a Source of Oxygen
Air as a Source of Neon and Argon
Test for Oxygen Gas
Test for Carbon Dioxide Gas
Unit 11
Rate of Chemical Change
Defining Reaction Rate
Measuring Reaction Rate with Gas Collection
Measuring Reaction Rate by Loss of Mass
Measuring Reaction Rate with Precipitation
Using Data-Logging Apparatus for Reaction Rate
Effect of Temperature on Reaction Rate
Effect of Concentration on Reaction Rate
Effect of Pressure on Reaction Rate
Effect of Surface Area on Reaction Rate
Explaining Reaction Rate with Particle Theory
Collision Theory and Successful Collisions
Role of Activation Energy in Reactions
Understanding Catalysts in Reaction Rates
How Catalysts Lower Activation Energy
Investigating Gas Collection Method
Investigating Reaction Rate with Sodium Thiosulfate
Interpreting Reaction Rate Graphs
Using Tangents to Determine Rate
Arithmetic Means in Reaction Rate Calculations
Constructing and Interpreting Data Tables
Drawing Line Graphs for Reaction Rates
Comparing Slopes of Graphs
Surface Area and Volume of Cubes in Reaction Rates
Factors Affecting Reaction Rate: Temperature
Factors Affecting Reaction Rate: Concentration
Factors Affecting Reaction Rate: Pressure
Factors Affecting Reaction Rate: Particle Size
Specifying Practical Work for Gas Collection Method
Specifying Practical Work for Sodium Thiosulfate Reaction
Examining Safety in Reaction Rate Experiments
Common Errors in Reaction Rate Experiments
Exam Trap: Misinterpreting Graph Tangents
Exam Trap: Confusing Concentration and Pressure Effects
Exam Trap: Misunderstanding Catalyst Function
Unit 12
Electric Circuits
Electrical Circuit Symbols
Understanding Series Circuits
Understanding Parallel Circuits
Current in Series Circuits
Voltage in Series Circuits
Current in Parallel Circuits
Voltage in Parallel Circuits
Using Voltmeters and Ammeters
Ohm's Law: Current, Voltage, Resistance
Investigating Current-Voltage Characteristics
Resistance in Series Circuits
Resistance in Parallel Circuits
Calculating Total Resistance in Series Circuits
Calculating Total Resistance in Parallel Circuits
Power in Electrical Circuits
Energy Transfer and Power Equation
Power and Resistance Relationship
Designing Circuits to Explore Resistance
Using Thermistors in Circuits
Using Light Dependent Resistors (LDRs)
Using Diodes in Circuits
Safety Precautions in Electrical Circuits
Practical: Current-Voltage Characteristics of Components
Exam Trap: Misinterpreting Circuit Diagrams
Exam Trap: Incorrect Unit Conversions in Calculations
Unit 13
Generating Electricity
Renewable Energy Sources Overview
Advantages of Renewable Energy Sources
Disadvantages of Renewable Energy Sources
Non-Renewable Energy Sources Overview
Advantages of Non-Renewable Energy Sources
Disadvantages of Non-Renewable Energy Sources
Processes in Fuel-Based Power Stations
Sankey Diagrams for Energy Transfers
Calculating Energy Efficiency
Introduction to the National Grid
Monitoring Power Use in the National Grid
Step-Up Transformers in Electricity Transmission
Step-Down Transformers in Electricity Transmission
Advantages of High Voltage Transmission
Comparing Power Station Types
Carbon Footprint of Power Stations
Reliability of Different Power Sources
Energy Output Comparison
Renewable vs Non-Renewable Energy Debate
Environmental Impact of Energy Generation
Social and Economic Implications of Energy Choices
Energy Efficiency in Homes
Common Exam Traps in Energy Efficiency Questions
Worked Example: Calculating Efficiency
Worked Example: Sankey Diagram Interpretation
Worked Example: Transformer Voltage Change
Unit 14
Making Use of Energy
What is Heat Transfer?
Conduction Explained
Convection Explained
Radiation Explained
Comparing Heat Transfer Methods
Particle Model of Matter and Heat Transfer
Why Metals Conduct Heat Better
Density Formula and States of Matter
Energy Transfer by Convection in Liquids
Energy Transfer by Convection in Gases
How Insulation Reduces Heat Loss
Loft Insulation Benefits
Double Glazing Benefits
Cavity Wall Insulation Benefits
Draught Excluders Benefits
Comparing Insulation Methods
Calculating Payback Time for Insulation
Economic and Environmental Issues of Insulation
Energy Costs for Heating and Transport
Using Data to Compare Energy Costs
Specified Practical: Investigating Heat Transfer Methods
Specified Practical: Determining Density of Liquids
Specified Practical: Determining Density of Solids
Unit 15
Domestic Electricity
Alternating Current and Direct Current
The Ring Main Circuit
Live, Neutral and Earth Wires
Functions of Fuses in Circuits
Miniature Circuit Breakers (MCBs)
Residual Current Circuit Breakers (RCCBs)
Calculating Appropriate Fuse Ratings
The Kilowatt as a Unit of Power
The Kilowatt Hour as a Unit of Energy
Calculating Units of Electricity Used
Calculating the Cost of Electricity
Energy Banding of Electrical Appliances
Power Ratings of Domestic Appliances
Safety Devices in Domestic Circuits
Energy Transfers in Domestic Appliances
Efficiency of Energy Transfer in Appliances
Using Solar Energy at Home
Using Wind Energy at Home
Cost Effectiveness of Renewable Energy Sources
Payback Time Calculations for Energy Devices
Investigating Energy Output from Renewable Sources
Investigating Efficiency of Electric Kettles
Risk Management in Using Domestic Electricity
Interpreting Data on Energy Use in Homes
Unit 16
Features of Waves
Transverse and Longitudinal Waves
Defining Amplitude, Wavelength, Frequency
Wave Speed Formula
Graphical Representation of Waves
Reflection of Waves in Ripple Tanks
Refraction and Speed Changes
Amplitude and Energy Relationship
Electromagnetic Radiation Overview
Ionising Radiation Characteristics
Regions of the Electromagnetic Spectrum
Electromagnetic Waves in a Vacuum
Applications of Electromagnetic Waves
Wave Equation: Worked Examples
Calculating Wave Speed
Using Speed = Distance/Time for Waves
Radio Waves and Communication
Microwaves and Satellite Use
Infrared and Visible Light Applications
Ultraviolet, X-rays, Gamma Rays Properties
Safety Concerns with Ionising Radiation
Sound Waves as Longitudinal Waves
Speed of Sound in Different Media
Investigating Water Wave Speed
Wavefront Diagrams and Boundaries
Common Misconceptions in Wave Refraction
Examining Radiation from Radioactive Materials
Energy Transfer via Waves
Satellite Orbits and Communication
Unit 17
Classification and Biodiversity
Definition of Classification
Broad Grouping of Organisms
Scientific Naming vs Common Names
Morphological Adaptations in Organisms
Behavioral Adaptations in Organisms
Resources Needed by Organisms
Factors Affecting Population Size
Definition of Biodiversity
Methods to Protect Biodiversity
Legislation for Endangered Species
Using Quadrats for Species Abundance
Principles of Sampling in Ecology
Capture-Recapture Technique
Calculating Estimated Population Size
Introduction of Alien Species
Effects of Alien Species on Ecosystems
Use of Biological Control Agents
Risks of Biological Control Agents
Investigation of Species Distribution
Factors Affecting Species Abundance
Fieldwork Sampling Techniques
Estimating Uncertainty in Ecological Data
Communicating Ecological Findings
Unit 18
Cell Division and Stem Cells
Chromosomes and Their Structure
The Function of Mitosis
The Process of Mitosis
Outcomes of Mitosis
The Function of Meiosis
The Process of Meiosis
Outcomes of Meiosis
Comparing Mitosis and Meiosis
Uncontrolled Mitosis and Cancer
What Are Stem Cells?
Types of Stem Cells: Adult vs Embryonic
The Ability of Stem Cells to Differentiate
Uses of Stem Cells in Medicine
Ethical Issues of Stem Cell Research
Chromosomes in Body Cells and Sex Cells
Genes and Their Role in Chromosomes
The Role of Cell Division in Growth and Repair
How Cancer Develops From Cell Division
Stem Cells in Plants
Examples of Stem Cell Therapies
Challenges in Stem Cell Treatments
The Role of Stem Cells in Regeneration
Scientific Advances in Stem Cell Research
Examining Chromosomes Under a Microscope
Common Exam Mistakes in Cell Division Topics
Worked Example: Mitosis Diagram
Worked Example: Meiosis Diagram
Worked Example: Stem Cell Application Question
Understanding Cancer Treatments
The Role of Genetics in Cancer Development
Key Terminology in Cell Division
Key Terminology in Stem Cell Research
Unit 19
DNA and Inheritance
Structure of DNA
The Double Helix
DNA Bases and Complementary Pairing
Role of DNA in Protein Synthesis
The Triplet Code
Genetic Profiling Process
Applications of Genetic Profiling
Ethical Implications of Genetic Profiling
Genes and Alleles
Key Terms in Inheritance
Dominant and Recessive Alleles
Homozygous and Heterozygous Genotypes
Phenotype vs Genotype
Single Gene Inheritance
Using Punnett Squares
Predicting Genetic Cross Outcomes
Ratios in Monohybrid Crosses
Multiple Gene Inheritance
Sex Determination in Humans
Chromosomes and Sex Genes
Random Fertilisation and Sex Determination
Artificial Gene Transfer Techniques
Advantages of Genetic Modification
Disadvantages of Genetic Modification
Ethical Issues in Genetic Engineering
Unit 20
Variation and Evolution
Definition of Variation
Genetic Variation
Environmental Variation
Continuous Variation
Discontinuous Variation
Causes of Genetic Variation
Role of Genes in Variation
Role of Environment in Variation
Mutations and Their Causes
Effects of Mutations
Beneficial, Neutral, and Harmful Mutations
Mutation Rates and Ionising Radiation
Sexual Reproduction and Genetic Diversity
Asexual Reproduction and Cloning
Comparison of Sexual and Asexual Reproduction
Definition of Natural Selection
Survival of the Fittest
Adaptations and Survival
Inheritance of Beneficial Traits
Role of Charles Darwin in Evolution Theory
Role of Alfred Wallace in Evolution Theory
Importance of Peer Review in Science
Mechanisms of Evolution
Examples of Natural Selection
Antibiotic Resistance in Bacteria
Pesticide Resistance in Insects
Warfarin Resistance in Rats
Extinction and Environmental Change
Definition of Evolution
Evolution and Biodiversity
Human Genome Project Overview
Potential Medical Applications of Human Genome Knowledge
Investigation into Variation in Organisms
Camouflage and Predator-Prey Relationships
Gene Therapy for Genetic Disorders
Mechanism of Cystic Fibrosis Inheritance
Limitations of Natural Selection Models
Role of Mutations in Evolution
Impact of Genetic Variation on Evolution
Factors Influencing Evolution Speed
Ethical Considerations in Genetic Research
Exam Trap: Misinterpreting Mutation Effects
Exam Trap: Confusing Continuous and Discontinuous Variation
Exam Trap: Misunderstanding Natural Selection Mechanisms
Exam Trap: Misrepresenting Darwin and Wallace Contributions
Unit 21
Response and Regulation
Sense Organs and Receptors
Stimuli and Electrical Impulses
The Nervous System Overview
The Brain and Spinal Cord
Reflex Actions Characteristics
Components of a Reflex Arc
Diagram of a Reflex Arc
Homeostasis Definition and Importance
Hormones as Chemical Messengers
Blood Glucose Regulation by Insulin
Diabetes Causes and Types
Treatments for Diabetes
Skin Structure and Temperature Regulation
Blood Vessel Diameter Changes in Skin
Sweating and Hair Erection in Temperature Control
Shivering and Heat Generation
Negative Feedback Mechanisms
Control of Blood Glucose by Insulin and Glucagon
Control of Body Temperature Feedback
Lifestyle Choices and Health Impacts
Effects of Alcohol on Body Chemistry
Drug Abuse and Chemical Processes
Type 2 Diabetes and Lifestyle Links
Investigation into Reaction Time Factors
Unit 22
Disease, Defence and Treatment
Definition of Health and Disease
Communicable and Non-Communicable Diseases
Causes of Communicable Diseases
Bacterial Infections and Examples
Viral Infections and Examples
Fungal Infections and Examples
Parasitic Infections and Examples
Spread of Communicable Diseases
Methods of Disease Prevention
Role of Hygiene in Disease Prevention
Vaccination and How It Works
Natural Defences Against Disease
Role of Skin as a Barrier
Role of Mucus and Cilia in Defence
Role of Stomach Acid in Defence
White Blood Cells and Their Functions
Phagocytosis and How It Works
Role of Antibodies in Immunity
Primary and Secondary Immune Responses
Antibiotics and Their Function
Antibiotic Resistance and Its Causes
Consequences of Antibiotic Resistance
Preventing Antibiotic Resistance
Antiseptics and Their Uses
Painkillers and Their Role in Disease Treatment
Antiviral Drugs and Their Mechanism
Development of New Medicines
Stages of Drug Testing
Preclinical Testing of Medicines
Clinical Trials and Placebos
Double-Blind Trials in Medicine Development
Ethical Issues in Drug Development
Role of Lifestyle in Non-Communicable Diseases
Impact of Smoking on Health
Impact of Alcohol on Health
Impact of Poor Diet on Health
Obesity and Associated Health Risks
Cardiovascular Disease and Risk Factors
Diabetes and Its Causes
Treatment of Diabetes
Cancer and Risk Factors
Treatment of Cancer
Lifestyle Changes to Prevent Disease
Global Challenges in Disease Control
Role of Antibiotics in Agriculture
Impact of Overuse of Antibiotics in Agriculture
Emerging Diseases and Global Spread
Role of Public Health Campaigns
Impact of Vaccination Programs
Challenges in Vaccine Development
Unit 23
Practical Assessment
Understanding Variables in Experiments
Formulating a Hypothesis
Planning an Investigation
Selecting Apparatus and Materials
Risk Assessment in Practical Work
Using Control Variables
Accurate Measurement Techniques
Recording Observations and Data
Using Tables to Record Data
Constructing Graphs from Data
Interpreting Graphs and Trends
Repeating Experiments for Reliability
Calculating Averages and Arithmetic Means
Identifying Anomalous Results
Evaluating Methods and Improvements
Drawing Conclusions from Data
Presenting Results in Scientific Reports
Understanding Precision and Accuracy
Understanding Repeatability and Reproducibility
Using Units and Significant Figures
Handling Errors in Experiments
Understanding Random and Systematic Errors
Using Data Loggers in Experiments
Graphing Relationships Between Variables
Comparing Qualitative and Quantitative Data
Using Mathematical Calculations in Experiments
Plotting Scatter Graphs and Identifying Correlations
Understanding Proportional Relationships in Data
Using Ratios and Percentages in Analysis
Understanding Experimental Bias
Using Models to Represent Scientific Ideas
Applying Theory to Experimental Contexts
Investigating Rates of Reaction
Investigating Energy Transfer Methods
Investigating Factors Affecting Photosynthesis
Investigating Reaction Time
Investigating Enzyme Activity
Investigating Hardness in Water
Investigating Speed of Water Waves
Investigating Factors Affecting Distribution of Species
Using Quadrats for Sampling
Capture-Recapture Techniques
Testing for Gas Production in Reactions
Testing for Starch, Glucose, and Proteins
Using Visking Tubing to Model Absorption
Using Limewater to Test for Carbon Dioxide
Using a Bell Jar Model for Respiration
Using Flame Tests to Identify Ions
Investigating Density of Solids and Liquids
Using Sodium Hydroxide to Absorb Carbon Dioxide
Investigating Gas Collection Methods
Using Silver Nitrate for Ion Identification